Spoiler for Image of the Device under the previous Keeper, with 'Core Jacket' worn as well.:

Device History: This device is a 'Sealed Device', a device that symbolizes a certain power of magic, as well as the medium in which the stability of the multiverse has been locked into during its creation. Being as such, anyone who holds one of the nine devices- a one-handed sword, a two-handed sword, a shield, a spear, a gun, a bow, a jewel, a staff and a book; can manipulate part of the laws of magic itself, bending it to his or her will. This device was found in a cache of device fragments while she and two of her fellow aces were investigating a Lost Logia case on Earth. at first, she didn't know that the crystal cross- the device on standby mode, was one of the devices they were looking for, and instead, she wore it like a piece of jewelry. After the team was broken up due to a fellow teammate retring for married life, it suddenly activated during a sudden scramble, making the once melee natural mage to now take up the gun. After she had risen up to the position, she barely uses the device, due to a secret- and then, The new Aces come in...

Modes:

Gun Mode: The basic form of Vulcan. it's normal attack are simple shots of energy.

Mode Skills:
-Shotgun Burst: Fires all barrels at once, shot akin to a shotgun and similar to the metal storm system. Comsumes one cartridge per release.
-Dance of the Gunner:
-Eagle Crusher: Fires ten charged shells in rapid sucession, enabling it to shatter shields by chance and possibly pulverize the target due to the force of the shells. consumes 3 cartridges for release.

Launcher Mode: The device's barrels close up and only a singular hole in the middle of the barrel assembly appears, enabling the gun to basically become a magic bazooka, shooting 'rockets' of homing energy, the damage rate may be affected a bit by AMF, but still can deliver a hurting shot when it hits. the greatest drawback though is each shot comsumes a cartridge per shot and the recoil can easily tire her.

Mode Skills:
-Powered Shot: a powerful focused shot of an energized missle.
-Cluster Bomb: an attack that fires a missle over an area and blows above the target, hitting the target in smaller damaging explosions. comsumes one cartridge per release.
-Hyperblast: a much more powerful version of the Powered Shot, taking more energy and enabling the attack to do splash damage. comsumes 3 cartridges, one for starting, one for charging and one for release.

Siege Mode: while in launcher mode, it can deploy a siege frame that encloses Vulcan in a mechanical shroud, enabling the gun/launcher to fire faster and much more powerful, but disabling the mage's movement (though she can aim in place) and ability to dodge, as the combined device and frame are too ungainly for movement.

Mode Skills:
-Compound Siege: a powerful, charged shot using the siege frame's booster to provide attack power and projectile speed.
-Cluster Blast: an attack similar to Cluster Bomb, but instead of blowing up above the target, the shot exits the barrel already clustered, spreads out towards the target/s and blows them up- a much more powerful version of the Shotgun Burst in a sense.
-Chain Rockets: a powerful shot of not just one, but three highly charged, extrememly enegetic rockets, boosted by the siege frame's booster and also by the magic power of Kyla. it consumes all seven cartridges of the clip- 1 for opening, 1 for charging, 2 for boosting and the last 3 for shooting the rockets themselves.

History:
Pre Nanoha Period:
Born in the 26th administrated world, she was born as Kyla Kiramena, third daughter of the imperial priestess serving the emperor of that planet. As she was the thrid daughter, luckily tradition had stated that she no longer had to follow the foosteps of her mother and thus was allowed to choose her career, unlike her two older twin sisters- well both had liked the temple life and thus had deided to serve as priestesses. When she was four, she began to lean from her mother, the ancient magical arts, passed down from generation to generation- whether or not the child became a priestess or not. At age seven, she got her first glimpse of the Mid-childa system during an eduactional exchange between her school and one in that said system, where she lived and studied for an entire school year. Awed by the potential of magic during her exchange, she began to dig thru libraries and even her family's sacred archive, to learn other things about magic. And at age 9, she began to self-teach, what to her a new way of using magic, but was actually a higher and secret level of art in her family- Martial Magic. At ten, she was caught in her self-lesson sessions and instead of being reprimanded, she was praised for doing it. When asked what she wanted to be, she replied with only one line.
"I want to be a midchildan mage, and i'll be happy about it."
And with those words, she was once again sent to that system, but now she was going to live under the care of an uncle who was visiting them. Years pass and then, she entered the only non-military group that can train her to become a proper mage- the Time-Space Administration Bureau. During the day of admission, she had been assigned to room and group 14, along with two other newbies, Lindy Marksen, a midchildan citizen and a certain Momoko Kagurazaka, from a world she calls 'Terra'. And so began the training- in which batchmates had called Kyla the 'Martial Angel', the only one in the batch, who has no device- her teammate Lindy had a staff called 'Fairy Star' and Momoko had a nameless gold and red orbed device- which Kyla had affectionately called the 'Heart'. It was only at graduation when she got her first device, a pair of simple, power boosting bracelets- only holding her barrier jacket- called 'Elements'. Years pass by and team 14 eventually became the 'Gold Squad', with Lindy as the leader, with thier ship assignment the TSABS Starbreaker, under the command of Commodore Rhea Telostos. They began to gain popularity in the same way as the Aces of today (Nanoha, Fate and Hayate), sucessfully completing missions, no matter hard it was. Kyla then signed up for leave after the team was formally disbanded, with Momoko leaving for married life and Lindy going to command school, returning back to her planet for rest. It was there that she had met Mertholo or simply Mertho Scrya, a prominent archeologist who was doing an excavation of her family home's garden after a new landscaping project had uncovered several artifacts. During her six months at home, she began to have a relationship with the young archeologist, but he failed to secure a romantic one as she went back to tackle a request from her previous commander- Command School. She finally met up with Lindy, who was now engaged and a pending ship captain. and in less time that Lindy took command school, she had maanged to finish it with high marks, thus somehow ousting the next eligible ship captain candidate out of his spot. Kyla was given the Starbreaker and Lindy was assigned to be her vice- while assignments for the new bureau ship classes were being drawn up. it was also at this time when the young Scrya that she had met at home was also assigned during her first mission- paving the way for a romantic, off the scene relationship- which ended up in a double marriage for both commanding officers.

Nanoha / A's Period:
Years later, with Lindy assigned to one of the newest ships of the bureau, she continued to ace up her missions, usually involving catching criminals and such- and on this note, the newly established bureau council had now asked her to lead a new unit- the First Exatactical Group or AX as it was called by common agents. When the Starbreaker was finally retired, she assumed an office command post- hearing such stories such as the Jewel seeds and the Book of Darkness. And then, two years later, in one of the most dangerous missions ever undertaken, Kyla meets the Aces for the first time- the mission, stop a rampaging Lost Logia ship- the future TSABS Silvana. They manage to subdue the Lost Logia Ship and in time, it was retrofitted to become one of the best ship of the bureau- living up to the ideals of the AX- doing the impossible and under the table missions.

AlternateS Period:

Kyla reunites with Nanoha and her group after she was attacked by one of the Dei warriors under the command of the still obsucre Nonaha- the Dei`Ministra. Kyla, being a keeper herself, signs up to the case of finding all of the sealed devices and meets with Kha, reveals Nonaha, combats the last remants of the rogue Ancient Belka, gathers the last elements of the AV knights, witnesses the birth of Neo-belka, and finally the defeat and conversion of Nonaha and the revelation of the greatest enemy of all. Details still under processing.

Post AlternateS - Otome Daisen Mission

Kyla reunites with the aces in a especially dangerous mission to retrieve or destroy a powerful Lost Logia. Details currently under hold due to data discrepancies.

Post StrikerS
The First Exatactical group, was currently in a mission to capture a rumored X-Class mage criminal called Fangwang. Since the danger level was that high, MD6 was also called in, along with various units of the bureau and Galactic Military, to assist. Details incomplete.

Spoiler for Secret of her Child:

There was a legend of the 'hidden divine prince', in which a goddess, due to her piling duties in heaven, goes to the ground and leaves her only son at the door of a barren couple.
"And so the goddess, fighting all of her sadness, leaves her child at the door, wishing him a better life on the ground- but as a reminder of the power he inherited and the responsibility he must do, she gives him her only real posession- her own sword." - A Goddess' Tears, passage 14.
According to mid-chidan and belkan theologists, this goddess was none other than Danaan- the midchildan creator goddess and patron of all mages and the belkan representative goddess- patron of all knights and especially Meisters. As for the reasons of abandonment, it was unclear- some scripture tell of an internal quarrel, some of forced abandonment, and many others.
Unbelivably, this very event occured to Kyla- a robed figure in white, with a divine seal surging at her feet, in tears as she left a basket containing her son- protected from the rain by her last painful wish to not leave him- but alas, duties of heaven beckon on the mother- disappearing infront of her. Kyla, was unable to give birth due to frequent miscarriages and could only do what a person could do in that situation, take the divine child as her own- and she named him in her native tongue- the word for 'Protection' - Yuuno.

@ Kha:

just integrate some other reason for sectarian violence and then we have the velka story

AHA! Finally getting there, Saint X? We're getting to the real juicy parts now, eh? Please continue! I'll be eagerly looking forward to more of the Mother and Son Chronicles of the Scrya. Good work!

On a different note, here is the first character of the experimantal group, the Phantom Squadron. The leader is:

Profile: He is used to a bounty hunter but currently a TSAB Contract Mage. He was recruited two years prior to StrikerS by the TSAB military (actually by the influence of a researcher named Aurion Dauer). He seems like a cold and calculating individual most of the time, but he is also shown to be able to handle casual conversations with mostly anyone. He was transferred over to the research facility Professor Dauer is working on to serve as a tester of the new types of devices made by the said researcher. He would be later joined by his teammates Cressida Rush, Liana Forsa, Vinson Forenza and the Guardian Beast, Barabus, to compose the Phantom Squadron.

Personality: Brevis, a first glance, gives of the impression of a stern and imposing person. Though the first impressions have their merit, (he is rather silent and calculating) he is in fact a slightly laid back person who has a passion for gambling. He would generally get along well with anyone once they get to know him, (initially intimidating several of his acquaintances at first encounters) but he's not one to speak for long; except when the mission is involved. He's always calm and has very impressive judgement during combat (despite his reckless combat style). He has a hobby of gambling, preferring the higher stakes for higher excitement, and usually treats battles as a sort of gamble.

Relationships:He usually regards anyone with silent consideration. But he is shown to be quite close with his squadmates, especially Cressida, who is rumored to be his girlfriend. Ironically, his silent character contrasts only too well with Cressida's unnervingly happy and carefree attitude; making them seem like a comical couple like what can be seen in comedy sitcoms. He is rather supportive towards the soft-spoken Liana, while he and Vinson has a commander-soldier relationship. He can usually be seen speaking casually with the Guardian Beast, Barabus. He may appear wary around Aurion, but he generally trusts the researcher's judgment. Out of the three Aces, whom the Phantom Squad only gets to meet twice, Nanoha is shown to be the one most comfortable around him, even at one time berating him for his reckless tactics.

Device: Battle Armor Device Beowulf:
This device is one of the prototype battle armor designs by Aurion Dauer. It's functions is most identical with Armed Devices in general. It consists of a small upper-body armor with arm weapon attachments. The attachment for the right arm is a rather large pincer claw with a multi-barrel gun at the center, while the left arm attachment has four extendable energy jackhammer attachments. The right arm weapon makes use of a five-shot revolver cartridge loader while the left arm uses a large magazine loader (with five cartridges as well). The device also extends as an armor for Brevis up his arms and his torso. There are two small cannon attachments on each of his shoulders, along with small boosters at the backs and stabilizer wings at the sides. Beowulf has a mechanical male voice and speaks in German. He addresses Brevis as 'Fuhrer'. His sealed form is a belt with a buckle having a symbol of a Joker with a wolf's face.

Barrier Jacket: Brevis' barrier jacket consists of a red jacket under the armor provided by Beowulf, while his lower body has several black and red armor platings. He also gains a pair of boosters on his lower legs.

Fighting Style: Brevis' style is the most unusual combination of extreme defense and high speed. With Beowulf mostly an body armor more than a weapon, the two arm armamants and the cannons are technically secondary. Despite the bulk of his upper-body in his combat attire, the boosters and the stabilizer wings allows for a surprising amount of speed and mobility. He usually plows in to the enemy ranks at high speed using a variant of Panzergeist and proceeds to rip apart the enemy units apart. Given this, he is frighteningly dangerous in close-quarters combat, with his arm weapons (specifically the right) is capable of both enemy subdugation and attacking simultaneously. The canons allows him to fire off projectile spells at explosive levels at the cost of most of the range. He is capable of long range attacks but would rather leave that to others if possible. He is most dangerous when teamed up with Cressida; usually rendering enemies incapable of counterattacking due to the high mobility and the tenacity of the attacks of the two. He shares a combination move with Cressida called the 'Phantom Waltz'.

UNIQUE ABILITIES:
Brevis, technically not an official TSAB mage, is still not very accustomed to the relatively new Neo-Velka style of magic. He makes up for this with his impressive physical combat expertise coupled with the more straightforward spells of Velka like Panzergeist and Explozion. However, he was able to make a number of techniques entirely his own with his current knowledge of magic. Some of the abilities are:

Schrapnell Schuetze (Shrapnel Shooter)
- by gathering several clumps of dense magical energy in front of him, he is able to utilize his cannons to blast the gathered spheres of energy at an impressive firing rate. It is exceptionally difficult to dodge against this attack, making defense a primary choice of survival against this move. However, he almost always follows up with his Pincers or the Energy Quad-jackhammers; keeping the pressure up.

Erweiterung (Extension)
- As a simple application of controlling magical energies, Brevis is able to provide extensions to his Pincers and Jackhammers for extended applications.

Energy Horn
- By gathering a large amount of energy, Brevis is able to manifest a massive bladed energy horn in front of him, controlled by both his hands and his head (thus, the horn classification). This is an extremely risky but powerful move.

I'm certain some you would get the references. I'll be posting the second tomorrow or maybe on Monday.